Behringer Tube Overdrive To100 (Guitar/Bass / Keyboard) Authentic Tube-Sound Overdrive Effects Pedal Get tube-like distortion, smooth sustain and super fat tone Captures every nuance of your playing from smooth overdrive to screaming tube sounds Dedicated Drive, Tone and Level controls for awesome sound shaping Runs on 9 V battery or the BEHRINGER PSU-SB DC power supply (not included) First-class electronic On/Off switch for noise-free operation